Indicator Explainer
Progesterone
Produced in the corpus luteum and by the placenta, as an antagonist of estrogens. Promotes proliferation of uterine mucosa and the implantation of the blastocyst, prevents further follicular development.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C2297. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Progesterone (C2297)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C2297. NCI definition, reproduced without modification under CC BY 4.0.
- Premature progesterone elevation during controlled ovarian stimulation has limited impact on embryologic outcomes. — Fertil Steril, 2026-10-07 (PMID 42843705; literature)
- Serum progesterone as clock and gauge in natural cycle frozen embryo transfer. — J Formos Med Assoc, 2026-10-06 (PMID 42838789; literature)